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Li XD, Jiang GF, Li R, Bai Y, Zhang GS, Xu SJ, Deng WA. Molecular strategies of the pygmy grasshopper Eucriotettix oculatus adapting to long-term heavy metal pollution. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 276:116301. [PMID: 38599159 DOI: 10.1016/j.ecoenv.2024.116301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 03/31/2024] [Accepted: 04/03/2024] [Indexed: 04/12/2024]
Abstract
To study the heavy metal accumulation and its impact on insect exterior and chromosome morphology, and reveal the molecular mechanism of insects adapting to long-term heavy metal compound pollution habitats, this study, in the Diaojiang river basin, which has been polluted by heavy metals(HMs) for nearly a thousand years, two Eucriotettix oculatus populations was collected from mining and non-mining areas. It was found that the contents of 7 heavy metals (As, Cd, Pb, Zn, Cu, Sn, Sb) in E. oculatus of the mining area were higher than that in the non-mining 1-11 times. The analysis of morphology shows that the external morphology, the hind wing type and the chromosomal morphology of E. oculatus are significant differences between the two populations. Based on the heavy metal accumulation,morphological change, and stable population density, it is inferred that the mining area population has been affected by heavy metals and has adapted to the environment of heavy metals pollution. Then, by analyzing the transcriptome of the two populations, it was found that the digestion, immunity, excretion, endocrine, nerve, circulation, reproductive and other systems and lysosomes, endoplasmic reticulum and other cell structure-related gene expression were suppressed. This shows that the functions of the above-mentioned related systems of E. oculatus are inhibited by heavy metal stress. However, it has also been found that through the significant up-regulation of genes related to the above system, such as ATP2B, pepsin A, ubiquitin, AQP1, ACOX, ATPeV0A, SEC61A, CANX, ALDH7A1, DLD, aceE, Hsp40, and catalase, etc., and the down-regulation of MAPK signalling pathway genes, can enhanced nutrient absorption, improve energy metabolism, repair damaged cells and degrade abnormal proteins, maintain the stability of cells and systems, and resist heavy metal damage so that E. oculatus can adapt to the environment of heavy metal pollution for a long time.
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Affiliation(s)
- Xiao-Dong Li
- Guangxi Key Laboratory of Sericulture Ecology and Applied Intelligent Technology, School of Chemistry and Bioengineering, Hechi University Yizhou 546300, China; Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing 210000, China
| | - Guo-Fang Jiang
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing 210000, China; College of Oceanology and Food Sciences, Quanzhou Normal University, Quanzhou 362000, China.
| | - Ran Li
- School of Life Sciences, Qufu Normal University, Qufu 273165, China
| | - Yi Bai
- School of Life Science, Taizhou University, Taizhou 317000, China
| | - Guo-Song Zhang
- School of Agriculture and Bioengineering, Heze University, Heze 274000, China
| | - Shu-Juan Xu
- College of Life Science and Technology, Longdong University, Qingyang 745000, China
| | - Wei-An Deng
- Guangxi Key Laboratory of Sericulture Ecology and Applied Intelligent Technology, School of Chemistry and Bioengineering, Hechi University Yizhou 546300, China; College of Life Science, Guangxi Normal University, Guilin 541004, China.
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Moophayak K, Taeprayoon P, Pichtel J, Premmanee S, Phooseekaew C, Thinnok C, Avakul P, Meeinkuirt W. Necrophagous flies as bioindicators in Cd and Zn co-contaminated areas of Tak Province, Thailand. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 269:115800. [PMID: 38061082 DOI: 10.1016/j.ecoenv.2023.115800] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 12/01/2023] [Accepted: 12/05/2023] [Indexed: 01/12/2024]
Abstract
Necrophagous flies may be effective bioindicators of chemical substances within polluted locations, as they are sensitive to environmental changes, have large populations, and thrive in a single location over their lifespan. Diversity and abundance of necrophagous flies were determined at livestock farms contaminated with potentially toxic elements (PTEs) in Tak Province and Nakhon Sawan Province, Thailand. Substantial soil zinc (Zn) concentrations (> 1100 mg kg-1) were detected at a cattle farm at Khaothong, Nakhon Sawan Province, and soil cadmium (Cd) values were significantly elevated (> 3 mg kg-1) at a cattle farm in Pha De, Tak Province. Anthropogenic inputs including Zn mining, domestic wastewater, and certain materials used in local agriculture were point sources of PTEs at the livestock farms in the Pha De and Khaothong subdistricts. Lower temperatures and humidity during the rainy season may have resulted in increased numbers of necrophagous flies, which was 1.5 times greater compared to the dry season. However, the dry season exhibited a higher PTE buildup in fly tissue. The order of important value index (IVI) values of the necrophagous flies were: Chrysomya megacephala (56.80), Musca domestica (27.21), C. rufifacies (25.40) and Sarcophaga spp. (17.54), respectively. These necrophagous flies may play a significant role in PTE-contaminated ecosystems based on their high IVI values, suggesting that they could be used as bioindicators of PTEs. Principal component analysis (PCA) results for necrophagous flies associated with each sampling site during the dry season were consistent with flies having substantial IVI values. Musca domestica and C. megacephala of both sexes displayed substantial correlations with Cr, Al, and Mn, while females of Sarcophaga spp. displayed strong associations with Cd. At the cattle farm in Khaothong, males of M. domestica showed a significant relationship with Zn, Cu, Pb, and Ni. When considering PTE accumulation capacity in flies commonly found at field sites, C. megacephala and M. domestica are the most suitable bioindicators of PTEs. This study confirms that necrophagous flies serve as reliable bioindicators of PTE pollution.
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Affiliation(s)
- Kittikhun Moophayak
- Medical and Agricultural Fly Research Unit, Mahidol University, Nakhonsawan Campus, Nakhonsawan 60130, Thailand
| | - Puntaree Taeprayoon
- Agricultural and Environmental Utilization Research Unit, Nakhonsawan Campus, Mahidol University, Nakhonsawan 60130, Thailand
| | - John Pichtel
- Ball State University, Environment, Geology, and Natural Resources, Muncie, IN 47306, USA
| | - Siwaporn Premmanee
- Water and Soil Environmental Research Unit, Nakhonsawan Campus, Mahidol University, Nakhonsawan 60130, Thailand
| | - Chonthicha Phooseekaew
- Department of Biology, Faculty of Science, Mahasarakham University, Kantharawichai, Maha Sarakham 44150, Thailand
| | - Chonthicha Thinnok
- Department of Biology, Faculty of Science, Mahasarakham University, Kantharawichai, Maha Sarakham 44150, Thailand
| | - Piyathap Avakul
- Academic and Curriculum Division, Mahidol University, Nakhonsawan Campus, Nakhonsawan, Thailand 60130
| | - Weeradej Meeinkuirt
- Water and Soil Environmental Research Unit, Nakhonsawan Campus, Mahidol University, Nakhonsawan 60130, Thailand.
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Kökdener M, Gündüz NEA, Zeybekoğlu Ü, Aykut U, Yılmaz AF. The Effect of Different Heavy Metals on the Development of Lucilia sericata (Diptera: Calliphoridae). JOURNAL OF MEDICAL ENTOMOLOGY 2022; 59:1928-1935. [PMID: 36166585 DOI: 10.1093/jme/tjac134] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Indexed: 06/16/2023]
Abstract
This study investigates the impacts of three different heavy metals at different concentrations on some life-history traits of Lucilia sericata (Meigen 1826) (Diptera: Calliphoridae). First-instar larvae of L. sericata were reared on a diet containing four concentrations (0.25, 0.50, 1, and 2 µg/g) of the heavy metals (cadmium, zinc copper). The parameters measured were larval and pupal mortality, larval length, adult, pupal, and larval weight, and development time. Larval and pupal survival decreased as heavy metal concentrations increased. Pupal weight was significantly different among heavy metals andc oncentrations, but the adult weight was not significantly different among heavy metals and concentrations. The larval length was significantly different among concentrations and heavy metals. This study reveals that the presence of heavy metal in carrion or the carrion environment should be inconsidered when estimating the time of colonization in forensic investigations.
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Affiliation(s)
- Meltem Kökdener
- Ondokuz Mayıs University, Health Science Faculty, 55139, Samsun, Turkey
- Ondokuz Mayıs University, Graduate Education Institute, Forensic Science Program, 55139, Samsun, Turkey
| | | | - Ünal Zeybekoğlu
- Ondokuz Mayıs University, Science Faculty, Biology Department, 55139, Samsun, Turkey
| | - Umut Aykut
- Ondokuz Mayıs University, Health Science Faculty, 55139, Samsun, Turkey
| | - Ahmet Fazıl Yılmaz
- Ondokuz Mayıs University, Graduate Education Institute, Forensic Science Program, 55139, Samsun, Turkey
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Zhang Y, Xiong W, Yang S, Ai H, Zou Z, Xia B. Effects of Long-Term Exposure to Cadmium on Development, Reproduction and Antioxidant Enzymes of Aleuroglyphus ovatus (Acari: Acaridae). INSECTS 2022; 13:895. [PMID: 36292843 PMCID: PMC9604281 DOI: 10.3390/insects13100895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 09/28/2022] [Accepted: 09/28/2022] [Indexed: 06/16/2023]
Abstract
Grain contaminated by cadmium (Cd) has become a serious food security problem, and it is necessary to determine and evaluate the toxic effect and defense mechanism of long-term heavy metal pollution in grain. In order to evaluate the effects of long-term heavy metal Cd stress on the stored grain pests, Aleuroglyphus ovatus were fed with an artificial diet supplemented with different concentrations of Cd (0, 5, 10, 20 mg/kg). The development, fecundity and detoxification enzymes of A. ovatus were analyzed and observed. In this study, the immature duration of A. ovatus was significantly prolonged under long-term Cd stress. Moreover, the survival duration of female adults was significantly shortened. The total number of eggs laid and the daily number laid per female adult decreased significantly. There were significant differences in protein content at protonymph and tritonymph stages when the concentration of Cd exceeded 10 mg/kg. The protein content of female adults was higher than that of male adults. The activity of detoxification enzymes showed differences in different conditions, such as development stage, Cd concentration and gender. These findings confirmed that A. ovatus were sensitive to Cd, and their offspring were severely affected under long-term Cd stress. Therefore, A. ovatus is a good model for evaluating the toxicity of long-term heavy metal Cd stress. The study provides the basis and enriches the research content of heavy metal pollution on mites, contributing to the harmonious and healthy development between the environment and human beings.
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Affiliation(s)
- Yu Zhang
- School of Life Science, Nanchang University, Nanchang 330031, China
- Institute of Life Science, Nanchang University, Nanchang 330031, China
| | - Wenhui Xiong
- School of Life Science, Nanchang University, Nanchang 330031, China
| | - Shan Yang
- School of Life Science, Nanchang University, Nanchang 330031, China
| | - Hui Ai
- School of Life Science, Nanchang University, Nanchang 330031, China
| | - Zhiwen Zou
- School of Life Science, Nanchang University, Nanchang 330031, China
| | - Bin Xia
- School of Life Science, Nanchang University, Nanchang 330031, China
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Wang W, Tang W, Wang X, Liu W, Zhu F. Genes from Carboxypeptidase A, glutathione S-transferase, and cytochrome b families were found involved in lead transport in insect Musca domestica. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 230:113113. [PMID: 34968798 DOI: 10.1016/j.ecoenv.2021.113113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Revised: 12/10/2021] [Accepted: 12/20/2021] [Indexed: 06/14/2023]
Abstract
Lead (Pb) is a typical toxic contamination source all over the world. In this research, larvae of the housefly (Musca domestica) were fed a Pb-contaminated diet at different Pb doses of 0, 20 and 5000 mg/kg. RNA sequencing was used to identify genes that were differentially expressed in relation to lead transport or detoxification. RNA interference (RNAi) was carried on 12 candidate genes. The results showed that three luminal pH regions of mid-gut were at pH values of 6.33, 3.10, and 7.80. With increasing Pb concentration, the pH of the middle mid-gut decreased by one unit. The expression levels of carboxypeptidase A (CPA1), glutathione S-transferase (GST), and cytochrome b (Cyt b) were linked to Pb treatments, particularly high Pb concentration of 5000 mg/kg. RNAi-mediated down expression of CPA1, GST2, and CYTb-c1 resulted in low Pb accumulation in the larvae of 5000 mg/kg Pb group. These proteins played key roles in Pb transport and detoxification in M. domestica larvae.
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Affiliation(s)
- Wanqiang Wang
- Hubei International Scientific and Technological Cooperation Base of Waste Conversion by Insects, Huazhong Agricultural University, Wuhan 430070, China.
| | - Wenzheng Tang
- Hubei International Scientific and Technological Cooperation Base of Waste Conversion by Insects, Huazhong Agricultural University, Wuhan 430070, China.
| | - Xiaoping Wang
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, Huazhong Agricultural University, Wuhan 430070, China.
| | - Wen Liu
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, Huazhong Agricultural University, Wuhan 430070, China.
| | - Fen Zhu
- Hubei International Scientific and Technological Cooperation Base of Waste Conversion by Insects, Huazhong Agricultural University, Wuhan 430070, China.
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Wu H, Liu Y, Zhang X, Zhang J, Ma E. Antioxidant defenses at enzymatic and transcriptional levels in response to acute lead administration in Oxya chinensis. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 168:27-34. [PMID: 30384164 DOI: 10.1016/j.ecoenv.2018.10.061] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Revised: 10/10/2018] [Accepted: 10/16/2018] [Indexed: 06/08/2023]
Abstract
Lead (Pb) is known to be toxic to many organisms. Oxidative stress is a major mechanism of its toxicity. This research aims to investigate the effects of Pb on hydrogen peroxide (H2O2) and malonedialdehyde (MDA) contents, activities and mRNA levels of antioxidant enzymes (superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidase (GPx)) after Oxya chinensis were acutely treated with lead acetate for 24 h. The results showed that the LD50-24 h value of lead acetate to O. chinensis was 1541.89 (1431.19-1655.77) μg g-1 body H2O2 and MDA contents were elevated after Pb administration, which suggested that Pb induced the overproduction of ROS and caused oxidative stress. SOD activities were significantly inhibited 40.42% of the control by 280 μg μL-1 Pb. CAT activities were increased while GPx activities had no significant changes. Different types of antioxidant-related genes had various responses to Pb stress. The transcriptions of icCuZnSOD2 and ecCuZnSOD2 were significantly inhibited by different concentrations of Pb. MnSOD mRNA levels showed the concentration-dependent rise with the Pb concentrations increase. The expressions of ecCuZnSOD1, CAT1, and GPx were significantly up-regulated while the transcriptions of icCuZnSOD1 and CAT2 had no significant changes. Alteration of activities and mRNA expressions of antioxidant enzymes implied that Pb-induced antioxidant defenses were related to modifications at enzymatic and transcriptional levels. The profiles of antioxidant enzymes and H2O2 and MDA contents and relationships among the parameters indicated that the cooperation of multiple antioxidants rather than a single factor might be responsible for the antioxidant defenses against Pb stress.
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Affiliation(s)
- Haihua Wu
- Institute of Applied Biology, Shanxi University, Taiyuan, Shanxi 030006, PR China.
| | - Yongmei Liu
- Institute of Applied Biology, Shanxi University, Taiyuan, Shanxi 030006, PR China; College of Life Science, Shanxi University, Taiyuan, Shanxi 030006, PR China
| | - Xueyao Zhang
- Institute of Applied Biology, Shanxi University, Taiyuan, Shanxi 030006, PR China
| | - Jianzhen Zhang
- Institute of Applied Biology, Shanxi University, Taiyuan, Shanxi 030006, PR China
| | - Enbo Ma
- Institute of Applied Biology, Shanxi University, Taiyuan, Shanxi 030006, PR China.
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Perić-Mataruga V, Petković B, Ilijin L, Mrdaković M, Dronjak Čučaković S, Todorović D, Vlahović M. Cadmium and high temperature effects on brain and behaviour of Lymantria dispar L. caterpillars originating from polluted and less-polluted forests. CHEMOSPHERE 2017; 185:628-636. [PMID: 28728120 DOI: 10.1016/j.chemosphere.2017.07.050] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2017] [Revised: 07/10/2017] [Accepted: 07/11/2017] [Indexed: 06/07/2023]
Abstract
Insects brain as a part of nervous system is the first-line of fast stress response that integrate stress signals to regulate all aspects of insect physiology and behaviour. The cadmium (Cd) bioaccumulation factor (BF), activity of the neurotoxicity biomarker acetylcholinesterase (AChE), dopamine content, expression and amount of Hsp70 in the brain and locomotor activity were evaluated in the 4th instar of Lymantria dispar L. caterpillars fed a Cd supplemented diet and reared in an optimal temperature regime (23 °C) and/or exposed to high temperature (28 °C). The insects originated from two forests, one close to "Nikola Tesla" thermoelectric power plant, Obrenovac (polluted population), and the other Kosmaj mountain (less-polluted population, far from any industrial region). The Cd BF was higher in the less-polluted than in the polluted population especially at the high ambient temperature. AChE activity and dopamine content were changed in the brains of L. dispar from both populations in the same manner. Hsp70 concentration in caterpillar brains showed opposite trends, a decrease in the less-polluted and an increase in the polluted population. Locomotor activity was modified in both Lymantria dispar populations, but the pattern of changes depended on the stressors and their combined effect. ACh activity and dopamine content are sensitive parameters to Cd exposure, regardless of pollutant experience, and might be promising biomarkers in monitoring forest ecosystems.
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Affiliation(s)
- Vesna Perić-Mataruga
- Department of Insect Physiology and Biochemistry, University of Belgrade, Institute for Biological Research "Siniša Stanković", Despot Stefan Blvd. 142, 11060, Belgrade, Serbia.
| | - Branka Petković
- Department of Neurophysiology, University of Belgrade, Institute for Biological Research "Siniša Stanković", Despot Stefan Blvd. 142, 11060, Belgrade, Serbia
| | - Larisa Ilijin
- Department of Insect Physiology and Biochemistry, University of Belgrade, Institute for Biological Research "Siniša Stanković", Despot Stefan Blvd. 142, 11060, Belgrade, Serbia
| | - Marija Mrdaković
- Department of Insect Physiology and Biochemistry, University of Belgrade, Institute for Biological Research "Siniša Stanković", Despot Stefan Blvd. 142, 11060, Belgrade, Serbia
| | - Slađana Dronjak Čučaković
- Institute of Nuclear Sciences "Vinca", Laboratory of Molecular Biology and Endocrinology, University of Belgrade, Mike Petrovića Alasa 12-14, 11001, Belgrade, Serbia
| | - Dajana Todorović
- Department of Insect Physiology and Biochemistry, University of Belgrade, Institute for Biological Research "Siniša Stanković", Despot Stefan Blvd. 142, 11060, Belgrade, Serbia
| | - Milena Vlahović
- Department of Insect Physiology and Biochemistry, University of Belgrade, Institute for Biological Research "Siniša Stanković", Despot Stefan Blvd. 142, 11060, Belgrade, Serbia
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Gao Q, Wang X, Wang W, Lei C, Zhu F. Influences of chromium and cadmium on the development of black soldier fly larvae. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:8637-8644. [PMID: 28197942 DOI: 10.1007/s11356-017-8550-3] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Accepted: 02/01/2017] [Indexed: 06/06/2023]
Abstract
The black soldier fly Hermetia illucens is a good candidate for waste management. The harvested insects are rich in protein and have the potential to be used in animal feed. However, people are wary about heavy metals in waste. Therefore, it is necessary to understand how the uptake of heavy metals could affect H. illucens and where and to what extent metals are accumulated by the black soldier fly. Based on these considerations, developmental parameters were investigated in the different life stages of H. illucens fed an increasing concentration gradient of cadmium (Cd) and chromium (Cr); additionally, Cd and Cr distribution in the body parts of H. illucens at the different life stages was monitored. We found that Cd and Cr have no effects on larvae survival and eclosion rate, but they do have effects on larvae duration and pupation rate. Both Cd and Cr were transferred into larvae, prepupae, and pupae. While the concentrations of Cd in larvae and prepupae were much higher than that in their diets, the opposite case was observed with Cr. The concentrations of Cd and Cr in H. illucens decreased in later development stages. In individual larva and prepupa, Cd and Cr were mainly included in the body and not in the integument. In the pupa, the puparium contained higher Cd and Cr concentrations than the pupa body. The distribution of Cd and Cr in the different life stages and body parts may present a potential strategy for how H. illucens tolerate and remove heavy metal stress.
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Affiliation(s)
- Qiao Gao
- Hubei International Cooperation Base for Waste Conversion by Insects, Huazhong Agricultural University, Wuhan, 430070, China
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, Huazhong Agricultural University, Wuhan, 430070, China
| | - Xiaoyun Wang
- Hubei International Cooperation Base for Waste Conversion by Insects, Huazhong Agricultural University, Wuhan, 430070, China
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, Huazhong Agricultural University, Wuhan, 430070, China
| | - Wanqiang Wang
- Hubei International Cooperation Base for Waste Conversion by Insects, Huazhong Agricultural University, Wuhan, 430070, China
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, Huazhong Agricultural University, Wuhan, 430070, China
| | - Chaoliang Lei
- Hubei International Cooperation Base for Waste Conversion by Insects, Huazhong Agricultural University, Wuhan, 430070, China
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, Huazhong Agricultural University, Wuhan, 430070, China
| | - Fen Zhu
- Hubei International Cooperation Base for Waste Conversion by Insects, Huazhong Agricultural University, Wuhan, 430070, China.
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, Huazhong Agricultural University, Wuhan, 430070, China.
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Nguyen AH, Altomare LE, McElwain MC. Decreased accumulation of cadmium in Drosophila selected for resistance suggests a mechanism independent of metallothionein. Biol Trace Elem Res 2014; 160:245-9. [PMID: 24929542 DOI: 10.1007/s12011-014-0037-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2014] [Accepted: 06/03/2014] [Indexed: 10/25/2022]
Abstract
Heavy metals, including cadmium, are common contaminants in environments subject to human activity. Responses to exposure in the fruit fly, Drosophila melanogaster, are dosage-dependent and resistance is selectable. While metallothionein-mediated sequestration has been extensively studied as a mechanism of cadmium resistance, a link between selection for resistance and an increased accumulation of cadmium has yet to be demonstrated. To address this need, we have selected wild-type flies for cadmium resistance for 20 generations and tested metal content using mass spectrometry. Resistant flies were observed to contain lower levels of cadmium, arguing for a mechanism of cadmium resistance that is not mediated by increased sequestration. This, coupled with genetic evidence suggesting the involvement of factors located on the X chromosome, suggests a gene other than metallothionein may be involved in resistance in this line.
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Affiliation(s)
- Austin H Nguyen
- Department of Biology, Loyola Marymount University, 1 LMU Dr, Los Angeles, CA, 90045, USA
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Xie G, Zou J, Zhao L, Wu M, Wang S, Zhang F, Tang B. Inhibitional effects of metal Zn²⁺ on the reproduction of Aphis medicaginis and its predation by Harmonia axyridis. PLoS One 2014; 9:e87639. [PMID: 24533059 PMCID: PMC3922717 DOI: 10.1371/journal.pone.0087639] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2013] [Accepted: 12/29/2013] [Indexed: 12/02/2022] Open
Abstract
BACKGROUND Contamination, including metals, can disturb the reproductive processes of many organisms, including both prey and predatory insects. However, there is virtually no information on the effects of high level Zinc (Zn) pollution on aphids and ladybirds. The high concentrations of Zn²⁺ or Zn pollution inhibit reproduction in the phytophagous aphid, Aphis medicaginis, and the predatory ladybird Harmonia axyridis could provide important information. RESULTS It was observed in this study that Zn concentrations in Vicia faba (broad bean) seeds and seedlings in all Zn²⁺ treatments were significantly higher than that in the control group, and increased with increasing Zn²⁺ concentrations in the solution. The rate of reproduction in A. medicaginis declined significantly (p<0.05) over time in the five groups fed on broad bean seedlings treated with different concentrations of Zn²⁺ solution compared with the control group. These results showed that higher concentrations of Zn²⁺ significantly inhibited the reproductive capacity of A. medicaginis. We also cloned and identified a gene encoding vitellogenin (Vg) from A. medicaginis, which has an important role in vitellogenesis, and therefore, reproduction was affected by exposure to Zn²⁺. Expression of AmVg was reduced with increasing exposure to Zn²⁺ and also in the F1-F3 generations of aphids exposed to different Zn²⁺ concentrations. Predation by H. axyridis was also reduced in aphids exposed to high-levels of Zn²⁺. Similarly, ovipositioning by H. axyridis was also reduced. CONCLUSIONS Our results suggest that Zn²⁺ can significantly affect the reproductive capacity of both A. medicaginis and its predator H. axyridis, the former through effects on the expression of AmVg and the latter through avoidance of aphids containing high levels of Zn²⁺.
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Affiliation(s)
- Guoqiang Xie
- Hangzhou Key Laboratory of Animal Adaptation and Evolution, College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, Zhejiang, China
| | - Jiaping Zou
- Hangzhou Key Laboratory of Animal Adaptation and Evolution, College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, Zhejiang, China
| | - Lina Zhao
- Hangzhou Key Laboratory of Animal Adaptation and Evolution, College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, Zhejiang, China
| | - Mengjing Wu
- Hangzhou Key Laboratory of Animal Adaptation and Evolution, College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, Zhejiang, China
| | - Shigui Wang
- Hangzhou Key Laboratory of Animal Adaptation and Evolution, College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, Zhejiang, China
| | - Fan Zhang
- Institute of Plant and Environment Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Bin Tang
- Hangzhou Key Laboratory of Animal Adaptation and Evolution, College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, Zhejiang, China
- Institute of Plant and Environment Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
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Kafel A, Nowak A, Bembenek J, Szczygieł J, Nakonieczny M, Swiergosz-Kowalewska R. The localisation of HSP70 and oxidative stress indices in heads of Spodoptera exigua larvae in a cadmium-exposed population. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2012; 78:22-7. [PMID: 22133653 DOI: 10.1016/j.ecoenv.2011.10.024] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2011] [Revised: 10/10/2011] [Accepted: 10/25/2011] [Indexed: 05/21/2023]
Abstract
The effects of cadmium toxicity may vary between animals with different history of metal exposure. The aim of our study was to examine HSP70, protein carbonyl levels, catalase activity and total antioxidant capacity in the heads of Spodoptera exigua (Hübner) larvae originated from undergoing 1- and 44-generational cadmium treatment and in control (those that were not exposed to cadmium). We also measured the cadmium concentration and DNA damage level in the larvae. We observed higher level of heat shock proteins (HSPs) in the heads of larvae derived from multi-generational metal treatment than in the heads of those from one-generational treatment (derived from the control rearing). Analysis of HSP localisation in the larval brain suggests that these changes could be important for protecting the neural function of larval mushroom bodies for animals selected during multigenerational metal exposure. Animals from one-generational treatment had, in turn, higher total antioxidant capacity than animals from multigenerational treatment. Anyway, animals from one- and 44-generational metal treatments did not differ in metal accumulation in the heads and the whole larval bodies, catalase activity or DNA damage level. All these measurements were higher than for control larvae and cadmium accumulation in the heads was much lower than in the whole bodies.
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Affiliation(s)
- Alina Kafel
- University of Silesia, Department of Animal Physiology and Ecotoxicology, Bankowa 9, PL 40-007, Katowice, Poland.
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Borowska J, Pyza E. Effects of heavy metals on insect immunocompetent cells. JOURNAL OF INSECT PHYSIOLOGY 2011; 57:760-770. [PMID: 21419130 DOI: 10.1016/j.jinsphys.2011.02.012] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2010] [Revised: 02/10/2011] [Accepted: 02/21/2011] [Indexed: 05/30/2023]
Abstract
The influence of the following heavy metals, copper (Cu), zinc (Zn), cadmium (Cd) and lead (Pb), on haemocytes of the house fly Musca domestica L. was studied under laboratory conditions. House fly larvae were exposed to low or high, semi-lethal concentrations of metals. These particular metals were selected because they are present in polluted environments in Poland. In addition, we studied expression of the stress proteins HSP70 and HSP72 in haemocytes collected from larvae that had been exposed to heavy metal. The obtained results showed changes in haemocytes morphology and phagocytotic plasticity in the experimental flies in comparison to control. The number of prohaemocytes, regarded as stem cells, increased, while granulocytes, responsible for phagocytosis, decreased. However, we have not detected any clear changes in expression of HSP70 or HSP72 in flies treated with low or high concentrations of the heavy metals.
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Affiliation(s)
- Joanna Borowska
- Department of Cytology and Histology, Institute of Zoology, Jagiellonian University, Ingardena 6, 30-060 Kraków, Poland
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Rodrigues A, Cunha L, Amaral A, Medeiros J, Garcia P. Bioavailability of heavy metals and their effects on the midgut cells of a phytopaghous insect inhabiting volcanic environments. THE SCIENCE OF THE TOTAL ENVIRONMENT 2008; 406:116-22. [PMID: 18793793 DOI: 10.1016/j.scitotenv.2008.07.069] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2008] [Revised: 07/23/2008] [Accepted: 07/31/2008] [Indexed: 05/21/2023]
Abstract
Organisms living in volcanic environments are chronically exposed to metals, either as particles or associated with gases, from volcanic emissions, being therefore potential sentinels of the effects derived from such exposure. Concentrations of Ca, Cd, Cu, Mg, Mn, Pb, Rb, and Zn were measured in soil, grass (Lolium perenne), and larvae of Pseudaletia uninpuncta captured in sites exposed and non-exposed to volcanic activity. The midgut epithelial cell morphometry and apoptosis of P. unipuncta larvae were also analyzed. Larvae from the site with volcanic activity showed higher levels of Cu, Mn, Rb and Zn. Metals such as Pb, Cd and Mg levels of P. unipuncta larvae were similar between sites. Apoptosis was higher in cells from digestive epithelium of larvae exposed to volcanic activity. Soils and grass not exposed to volcanic activity showed higher levels for most of the analyzed elements with the exception of Rb. Such result when compared with metal levels of larvae may reveal that bioavailability of elements differs between sites. The higher levels of Cd, Zn and Mg in soils and grass from the site with no volcanic activity are probably related to the severe artificial fertilization in the studied pastures. Such result, when compared with metal levels of larvae, suggest that the bioavailability of metals differs between sites.
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Affiliation(s)
- Armindo Rodrigues
- Departamento de Biologia, Universidade dos Açores, R. Mãe de Deus, Apt 1422, 9501-855 Ponta Delgada, Portugal.
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